The Anahí Ametrine mine, Bolivia
Paulo M. Vasconcelos, Hans-Rudolf Wenk, March 1, 1994
The Anahí mine, Bolivia, has produced large amounts of amethyst, citrine and amethyst-citrine for the gem market.
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Russian Synthetic Ametrine
Vladimir S. Balitsky, Taijin Lu, June 1, 1999
Gem-quality synthetic ametrine has been produced commercially in Russia since 1994.
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